Grinding-machine.



PATENTED SEPT. 4, 1906.

w. E. PAINE.. GRINDING MACHINE. APPLIOATION FILED 00T.31 1905.

2 SHEETS-SHEET 1.

,WLELPQL'IZ 1 alto mu; I

' No. 830,360. PATENTED SEPT. 4;, 1906. I W. B. PAINE.

GRINDING MACHINE.

APPLICATION FILED 0OT.31. 1905;

2 SHEETS-SHEET 2.

Qttmmaq shears, and

WELLINGTON E. PAINE, OF ROSEBUD, MONTANA.

GRINDING-MACHINE.

Specification of Letters Patent.

Patented Sept. 4, 1906.

Application filed October 31, 1905. Serial No. 285,323.

Be it known PAINE, a citizen of the ing at Rosebud, in the and State of Montana, and useful Improvements in Grinding-liachines, of which the following is a specification.

This invention relates to grinding-machines desi ned especially for sharpening as for its objects to produce a comparatively simple inexpensive device of this character which may be readily transported from place to place, one wherein the grinding mechanism will be normally housed within and protected by a suitable casing which may be readily opened to permit use of the device, one wherein asuitably high rate of speed will be imparted to the grinding wheel and the tool be held in proper position relative to the latter during the grinding operation, and one in which the abrasive surface of the wheel may be readily renewe from time to time as circumstances require.

Vith these anl other objects in view the invention comprises the novel features of construction and combination of parts more fully hereinafter described.

In the accompanying drawings, Figure 1 is a perspective view of a device embodying the invention and showing the same in normal condition for transportation or storage. Fig. is a front elevation showing the casing open and a pair of shears held in position to be sharpened. Fig. 3 is a side elevation, partly in section, of the grinding mechanism as viewed in the direction of the arrow in Fig. 2. Fig. 4 is a detail view in elevation of the grinding-wheel shaft and adjacent parts. Fig. 5 is a detail view of the tool-holding clamp. Fig. 6 is a detail view, on an enlarged scale, of the clamping device for holding the emerycloth.

all whmn it may concern:

that 1, lNELLrNe'roN E. United States, residcounty of Rosebud Fig. 7 1s a detail view, partly in section, illustrating the manner of detachably securing the drive-pinion to the shaft of the grinding-wheel.

Referring to the drawings, 1 designates a box or casing having a hinged lid or cover 2 and equipped with a foldable handle 3, by which the device may be readily transported from place to place.

Journaled in the casing 1 is a drive-shaft 4, having one end thereof projected through the adjacent wall of the casing for the reception of a removable operating-crank 5, there being fixed upon said shaft and within the corresponding teeth of a pinion grinding-shaft 9, ournaled in bearings 10,

have invented new carried adjacent the the outer end of The shaft 9 is preferably threaded at one end,

ginally around the rim of mg its ends seated in' and the slot 15 and engaged between a pair of cowhereby the cloth 19 may when worn veniently renewed, as will casing a drive-wheel 6, having inner peripheral gear-teeth 7, designed to mesh with the 8,1ixed on a free ends of a pair of spaced supporting arms or members 11, in turn pivoted at their lower ends, as at 12, in a bearing member inner face of the bottom being fixed on with a grinding-wheel 14, having tersected by a radial opening or bracket 13, fixed to the of the casing, there its rim inor slot 15, disosed at a suitable point in alinement with one of the wheel-spokes 16.

as at 17, for the reception of the pinion 8,

which is thus arranged in detachable engagement with the shaft while the bearings 10 are adjustably held in the arms 11 by means of adjusting-screws 18, whereby the bearings may be adjusted longitudinally of the arms for a purpose which will hereinafter appear.

The grinding-wheel 14 is provided with an abrasive surface 19, preferably in the form of a strip or ribbon of emery-cloth applied marthe wheel and havextended through operating spring clamping members or jaws 20, suitably fixed to the adjacent spoke 16,

be conbe readily understood, it being noted in this connection that the outer face of the wheel 4 to which the cloth is applied is of slightly convex form in cross-section.

Fixed in the casing 1 is a bracket-arm 21, having an opening 22, in which is rotatively disposed a bearing member or eyebolt 23, designed to receive and pivotally sustain one end of an arm or lever 24, having pivoted to its other end, as at 25, a relatively movable portion or section 26, there being threaded onto the bolt 23 a clamping-nut 27, serving in conjunction with the bolt to clamp the le ver 24 against movement, while pivoted to the freeend of section 26 is a tool-holding member or head 28, having a tool-seat 29, in which the shears or other tool 30 to be sharpened is clamped by means of a clampingscrew 31, there being also provided on the tool-holder 28 a rearwardly-extending portion or shank 32, formed for engagement by re finger of the operator in adjusting the holder, as more fully hereinafter explained.

In practice the casing remains normally the shaft 9 for rotation thereclosed, as seen in Fig. 1, under which conditions the arms 1 1 stand in a substantially vertical position for maintaining the wheel 14 in proper position within the casing, which latter may be readily transported from place to place for use by means of the handle 3. en it is desired to sharpen a tool, the cover is turned to open position, as illustrated in Fig. 2 and the arms 11 swung forwardly for bringing the pinion 8 into mesh with the teeth 7 of the drivewheel, whereby when the latter is rotated through the medium of the I crank-5 motion will be imparted to the shaft 9 and grinding-Wheel. In preparing the de vice for use the nut 27 is arm 24 turned to a forwardly-inclined position, as seen in Fig. 3, after which the shears or other tool 30 is clamped in the-tool-holder 28 and held thereby in proper position upon the grinding-surface 19, i b

that the section 26 may be moved on its fulthe grinding-surface. abrasive material 19 becomes worn, the ends thfreof are released from the w moved from the grinding-wheel and replaced by .-a new one. be mentioned that the inclination of the lever 24 may be regulated ;to vary the position of the tool-holder by means of the nut 27 and that the bearings 10 may be adjusted longitudinally of the arms 11 through the medium of the adjustproperly position t with the teeth 7 arms 11 is varied. apparent that I ing-screws 18 in order to the pinion 8 for-engagem'e when the inclination of the From the foregoing it is loosened and the produce a simple device admirably adapted for the attainment of the ends in view, it being understood that in attaining these ends minor changes in the details herein set forth may be resorted to without departing from the spirit of the invention.

aving thus fully described my invention, what I claim as new is I 1. In a device of the class described, a boX or casing, a drive-shaft journaled therein, an internal-toothed drive-wheel fixed for rotation with the shaft, supporting members pivoted for swinging movement in the casing, a grinding-shaft journaled. in said members and provided with a pinion adapted to mesh with the d-rivinggear, a grinding-wheel fixed upon the second shaft, and a tool-holder for holding a tool in position to be ground, said holder being adapted for vertical and horizontal adjustment to position the tool rela-' tive to the grinding-wheel.

2. In a device of the class described, a driving-shaft, a driving-gear fixed for rotation therewith, a movable supporting memer, a grinding-shaft carried thereby and having a pinion designed to mesh with the gear, a pivoted supporting-lever provided with a relatively movable section, and a toolholder pivoted on said section for movement in a plane perpendicularly to the plane of movement of the section.

In testimony whereof I ailiX my signature in presence of two witnesses.

WELLINGTON E. PAIN E.

WVitnesses:

W. E. BRooKs, HAROLD TILLESON. 

